当多人尝试保存事务时，用户 ID 将变为空数据库

Question

当多人尝试保存交易时，用户 ID 将变为空数据库。我每次都根据数据库中的会话 ID 获取用户信息。我也尝试过查询字符串和会话。

下面提到的是从数据库中检索会话 ID 和系统名称的记录用户信息的代码。

我以前调用这些构造函数是web方法

public clsLoggedUser()
    {
        try
        {
            string strUserId = "";
            if (HttpContext.Current.Request.QueryString["x"] == null)
            {
              
                string strSessionID = HttpContext.Current.Session.SessionID;
                string strUrl = HttpContext.Current.Request.UrlReferrer.Authority;
                string strSystemName = Convert.ToString(System.Net.Dns.Resolve(HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]).HostName);

                OracleParameter[] objParam = new OracleParameter[3];
                objParam[0] = new OracleParameter("SESSIONID", OracleType.VarChar);
                objParam[1] = new OracleParameter("SYSNAME", OracleType.VarChar);
                objParam[2] = new OracleParameter("URL", OracleType.VarChar);

                objParam[0].Value = strSessionID.Trim();
                objParam[1].Value = strSystemName.Trim();
                objParam[2].Value = strUrl.Trim();

                DataTable dtUserDetails = clsOracleAccess.StaticExecuteDataset(CommandType.StoredProcedure, "PACKCOMMON.GETLOGGEDUSERID", objParam, true).Tables[0];
                if (dtUserDetails.Rows.Count > 0)
                {
                    strUserId = dtUserDetails.Rows[0]["APPLOCKID_NR"].ToString();
                }
                else
                {
                    Exception ex = new NullReferenceException();
                    clsErrorLogEntity.fn_AddNewErrorLog(DateTime.Now, "clsLoggedUser.cs (clsLoggedUser(-1)) [" + ex.Source + "]:" + ((String[])ex.StackTrace.Split(':'))[((String[])ex.StackTrace.Split(':')).Length - 1] + "", ex.Message, ex);
                }

            }
            else
            {
                strUserId = HttpContext.Current.Request.QueryString["x"].ToString().Trim();
            }
            
            if (!String.IsNullOrEmpty(strUserId))
            {
                OracleParameter[] objParam = new OracleParameter[1];
                objParam[0] = new OracleParameter("USERID", OracleType.Number);
                objParam[0].Value = Int32.Parse(strUserId);
                DataTable dtUserDetails = clsOracleAccess.StaticExecuteDataset(CommandType.StoredProcedure, "HMPACK.GETUSERINFOBYID", objParam, true).Tables[0];
                if (dtUserDetails.Rows.Count > 0)
                {
                    UserID = Convert.ToInt32(dtUserDetails.Rows[0]["APPID_NR"].ToString());
                    UserName = dtUserDetails.Rows[0]["APPUNAME_CD"].ToString();
                    Password = dtUserDetails.Rows[0]["APPUACCESS_CD"].ToString();
                    UserCode = dtUserDetails.Rows[0]["APPCODE_CD"].ToString();
                    IsAdmin = Convert.ToChar(dtUserDetails.Rows[0]["ADMINUSER_YN"].ToString());
                    UserConID = Convert.ToInt32(dtUserDetails.Rows[0]["CONID_NR"].ToString());
                    IsLoggedIn = true;
                    blIsAdmin = IsAdmin == 'Y' ? true : false;
                }
            }
        }
        catch (Exception ex)
        {
            
        }
    }
}
clsLoggedUser objclsLoggedUser = new clsLoggedUser();
objclsLoggedUser.UserName;
objclsLoggedUser.UserID;

Answer 1

（抱歉还不能发表评论）我注意到运行通过该代码并以“objclsLoggedUser.UserName == null”结束的可能性有很多。如果发生异常，您可以使用 'clsErrorLogEntity.fn_AddNewErrorLog' 进行记录，但 'if (!String.IsNullOrEmpty(strUserId))' 没有其他错误记录。您的 'catch (Exception ex)' 也没有记录任何内容。如果您在这些位置设置断点并运行代码，您很可能会找到罪魁祸首。或者在 'catch (Exception ex)' 设置后：

catch (Exception ex)
if(UserName == null)
   throw new IllegalStateException($"User is NULL, HELP!! Some info: {HttpContext.Current.Session.SessionID}");

在 throw 上设置断点或观察错误以了解问题所在。

当多人尝试保存事务时，用户 ID 将变为空数据库

When multiple people try to save a transaction the user id is going null to the database

c#

jquery

asp.net

ajax

webmethod